Edge related ferromagnetism in MoSe2 nanoflakes prepared via efficient chemical vapor deposition method

Gao Daqiang; Xia Baorui; Shi Shoupeng; Tao Kun; Xue Desheng

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Edge related ferromagnetism in MoSe2 nanoflakes prepared via efficient chemical vapor deposition method

Gao Daqiang,Xia Baorui #,Shi Shoupeng,Tao Kun,Xue Desheng *

Key Laboratory for Magnetism and Magnetic Materials of MOE,Lanzhou University

*Correspondence author

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Funding: Specialized Research Fund for the Doctoral Program of Higher Education （No.20120211120005）, National Natural Science Fundation of China （No.51371093, 51202101, 11474137, 11274146 and 11034004）, Fundamental Research Funds for the Central Universities（No.lzujbky-2015-111）, National Basic Research Program of China （No.2012CB933101）

Opened online:30 September 2015

Accepted by: none

Citation: Gao Daqiang,Xia Baorui,Shi Shoupeng.Edge related ferromagnetism in MoSe2 nanoflakes prepared via efficient chemical vapor deposition method[OL]. [30 September 2015] http://en.paper.edu.cn/en_releasepaper/content/4655492

Outstanding magnetic properties are highly desired for two-dimensional ultrathin semiconductor nanosheets for their potential applications in nano-electronics and spintronics. Here, ultrathin MoSe2 nanoflakes with plenty of edges were prepared via efficient chemical vapor deposition method. magnetic measurement results indicate that the sample exhibits strong ferromagnetic behaviour with saturation magnetization of 1.4 emu/g at room temperature, where the ferromagnetism persists up to 700 K, revealing the high Curie temperature of this material. Density functional theory spin-polarized calculations predict that strong ferromagnetic moments in MoSe2 nanoflakes are attributed to the zigzag edges. Our findings also suggest that the MoSe2 nanoflakes with a high density of edge spins could be used to fabricate spintronics devices, which are circuits utilizing the spin of the electron to process and store information.

Keywords:MoSe2; ferromagnetic; chemical vapor deposition

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